Subtract 70/40 from 80/10
1st number: 8 0/10, 2nd number: 1 30/40
80/10 - 70/40 is 25/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 10 × 4 = 40,
80/10 = 80 × 4/10 × 4 = 320/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
70/40 = 70 × 1/40 × 1 = 70/40 - Subtract the two like fractions:
320/40 - 70/40 = 320 - 70/40 = 250/40 - After reducing the fraction, the answer is 25/4
- In mixed form: 61/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/20-70/40 80/10-70/80 80/30-70/40 80/50-70/40 80/70-70/40